Morning back pain, runs to arms, like a burning sensantion in some points. Join burn also. My blood work is fine. Naproxen it helps! But what can be?

Muscle spasm. The type of symptoms you describe sound like muscle spasm. Burning is a classic description of muscle spasm. You could aso have some associated joint pain with it. See your family md for evaluation if it persists.
Agree with Dr. A. If you are overweight losing weight will help (easier said than done). Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated.